Ink paste



Patented Jan. 1, 1924.

. UNITED STATES PATENT OFFIC FRANK B. COONEY, OF MINNEAPOLIS, MINNESOTA.

INK PASTE.

- 1 No Drawing. Application filed June 9,

To all whom it may concern:

Be it known that I, FRANK B. CooNEY, a citizen of the United States residing at Minneapolis, in the county of lf-Iennepm and State of Minnesota, have invented certaln new and useful Improvements in Ink Paste, of which the following is a specification.

This invention relates to an ink product in the form of paste.

The primary object of this invention is the compounding of an ink which may be vended in paste form and rendered fluid for use by the addition of water, so that a very satisfactory writing fluidis provlded free of suspended matter and other mperfections.

An important object of this invention is the provision of an ink product in the form of paste, which may be vended in collapsible tubes, the same being ahighly concentrated ink body .which must be diluted to make the same fluid for writing purposes.

A further object of the invention is the provision of an ink; product of the above character, which by reason of the compact manner in which the same is manufactured and vended, will be of relativelylow cost, due to the concentrated form of the same, compact arrangement, and low shipping cost.

Other objectsand advantages of this invention will be apparent during the course of the following description.

It is preferred that the improved ink paste material be compoundedpf the following ingredients and proportions:

Cold water- 2 ounces. White potato .dextrin ounce. Gallic acid powdered C. P 336 grains.

Ferrous sulphate granulated .C. P 252 grains. Hydrochloric acid (18%). 130 minims.

Carbolic acid (90%) 1% drachms. Pure glycerine 2 drachms. Blue aniline A 217 grains. Indigotin 68 grains.

The improved ink composition is spe: cially prepared by the following process ix 2 ounces of cold water with 1 ounce of white potato dextrin, heating thL same 1922. Serial No. 567,168.

slowly in a double boiler until the same has I the proportions listed Gallic acid (powdered) 336 grains.

Ferrous sulphate (granulated) 0 P. 252 grains.

Hydrochloric acid (18%) 130 mlnims.

Carbolic acid (90%) 1% drachms. ure glycerine 2 drachms.

Blue aniline A 217 grains.

Indigotin 68 grains.

Each of the above ingredients must be separately and slowly added, .while constant-ly stirrin the heated mixture, in order that the ingre ients may be thoroughly as sociated an compounded at the temperature of between 80 and 85 F. ,It is absolutely necessary that this temperature be held during mixing of the ingredients. After the ingredients have been thoroughly mixed, the temperature of the composition may be raised to 95 F. After the proper association of the ingredients at the last mentioned temperature, the mixture is poured in its viscid condition into collapsible lead tubes and permitting to stand twenty-four hours before sealing said tubes. The above specified ingredients and their proportions will produce four fluid ounces of the resultant ink paste, which amount is sufiicient for one gallon of ink after dilution.

Blue aniline A herein mentioned, is to be understood as referring to sodium salts of trisulpotriphenylpararosaniline and trisulpotriphenylrosaniline. a

The above formula is given with the assumption that the water used therein contains considerable alkaline matter. Where water is used in the compounding of the improved ink, which contains but little alkaline matter, acetic acid may be added to the amount desired.

The resultant product forms a paste within the collapsible vending tube, and is of departing from ing cold water, L

, glycerine,

' phate,

pended matter and is a perfect writing The paste form of ink is superior to other forms of concentrated ink, such as powders or tablets, not alone due to the fact that the same is easily handled, but due to the ease of mixing to prepare the final writing fluid.

Various changes in the ingredients and proportions thereof may be made to the imroved ink product, as well as alterations to the process of making the same, without the spirit of the invention, or the scope of theclaims.

ll claim:

1. An ink in the form of paste comprising water, white potato dextrin, gallic acid, ferrous sulphate, hydrochloric acid, carbolic acid, glycerine, and coloring matter.

2. An ink in thelform of paste comprising water, white potato dextrin, gallic acid, ferrous sulphate, hydrochloric acid, carbolic acig, glycerine, coloring matter, and acetic ac1 3. An ink in the form of paste comprising water, a relatively large quantity of viscid matter, gallic acid, ferrous sulphate, hydrochloric acid, carbolic acid and coloring matter. a 1

4. An ink in the form of paste compriswhite potato dextrin, powdered gallic acid, granulated ferrous sulphate, hydrochloric acid, carbolic acid, pure blue aniline A, and indigotin.

5. An ink in the form of paste comprising cold water, whitepotato dextrin, powdered gallic acid, granulated ferrous sulaniline A, indigotin, and acetic acid.

6. An inkin paste form comprising the carbolic acid, pure glycerine, blue reac es following ingredients and their respective proportions tto Cold water 2 ounces. White potato dextrin 1 ounce. Powdered gallic acid 336 grains. Granulated ferrous sulphate 252 grains. Hydrochloric acid 18%)-" 130 minims. Carbolic acid 1J drachms. Pure glycerine 2 drachms. Blue aniline A 217 grains. lndigotinu 68 grains. w

7. An ink in the form of paste comprising the following ingredients andtheir'respective proportions 1 Cold water 2 ounces. 0 White potato dextrin 1 ounce. Powdered gallic acid 336 grains. Granulated ferrous sulphate 252 grains. Hydrochloric acid 18%) 130 minims: Carbolic acid (90% 1 drachms. W Pure glycerinewn' 2 drachms. Blue aniline A 217 grains. lndigotin 68 grains. Acetic acid.

8. That method of compounding an ink in t5 paste form, which consists of the mixing of 2 ounces of cold water and 1 ounce of white potato dextrin, heating the same slowly to a temperature of 172 F, thoroughly mixing the same, permitting the mixture to an cool to approximately 85 151, at which temperature the following ingredients and their respective proportions are separately added and miXed:- Gallic acid 336 grains. {w Ferrous sulphate 252 grains. Hydrochloric acid 130 minims. Carbolic acid 14; drachrns. Glycerine -1 2 drachms. m lndigotin; 68 grains.

permitting the resultant composition to be thoroughly heated to R, and permitting the mixture to stand twenty-four hours.

rninrn c. coonrr. 

